Information displaying apparatus with word searching function and recording medium

ABSTRACT

Plural keywords for a search character string are searched for through a dictionary-content data memory and displayed in a list form in a left area of the searched-keyword list display screen, and heading data included in explanation contents concerning the keywords are read out from a keyword table to be displayed in a right area of the display screen. When a keyword is designated among the plural keywords displayed in a list form, heading data contained in plural explanation contents concerning the designated keyword are read out from an explanation data table and are displayed in a list form over the heading data displayed in the right area.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to an information displaying apparatus such as an electronic dictionary and to a computer program for displaying explanation information concerning a keyword.

[0003] 2. Description of the Related Art

[0004] An electronic dictionary has been in practical use, in which, when a user enters a word that he/she wants to learn the meaning to instruct to make a search for the word, the word is searched for through explanation contents previously stored therein, and the explanation content concerning the word is read out and displayed.

[0005] Another electronic dictionary is also in practical use, in which when the user enters a desired word, keywords which coincide with the entered word and similar words are displayed in a list form, and further when the user selects his/her desired word among the plural keywords or similar words displayed in a list form, a display screen is switched to display the explanation content concerning the selected word, allowing the user to learn the appropriate meaning of his/her desired word. An electronic dictionary has been proposed, which has a list display area and a preview display area for a keyword, and displays in the list display area a list of candidate keywords for entered characters and simultaneously displays information corresponding to a word selected with a cursor among the list of candidate keywords.

[0006] Further, an electronic dictionary has been put to practical use, in which, when the user enters his/her desired word, keywords which coincide with the entered word and words similar to the entered words are displayed in a list form, and when the user's desired word is selected among the plural keywords or similar words displayed in a list form, a display screen is switched to display the explanation content concerning the selected word, allowing the user to learn the appropriate meaning of his/her desired word.

[0007] Another electronic dictionary has been in practical use, in which search characters consisting of plural words (not a single word) are searched for and an electronic dictionary is put to practical use, in which data base specialized in phrases is prepared, and search characters consisting of plural words are searched for through such data base.

[0008] For searching for a phrase, a dictionary having data base specialized in phrases is used, or a word is searched for such data base and the user learns the phrase form a sample sentence contained in the explanation content concerning the word.

[0009] In the conventional dictionaries set forth above, since the whole explanation content concerning the selected keyword is displayed, the user is forced to read the explanation content from the very beginning to reach his/her desired appropriate explanation content, which requires a troublesome work. Further, in the electronic dictionary which displays information concerning the word selected with the cursor for previewing purpose, the user is required to read the explanation content from the beginning to reach his/her desired appropriate explanation content.

[0010] Some electronic dictionary displays plural explanation contents concerning the selected keyword, but the explanation contents to be displayed are changed every time another keyword is selected among those displayed in a list form. Therefore, when the appropriate content is not contained in the currently displayed explanation contents, the user is required to make a time consuming manipulation to change the displayed explanation contents to obtain appropriate information.

[0011] In searching for a phrase though a specialized dictionary prepared for searching for a phrase, a phrase such as “word+a preposition” having a special meaning may be searched or found, but a phrase of “word+a preposition” having a normal meaning is not often found in such specialized dictionary.

[0012] As described above, it will be difficult for a beginner to determine which dictionary is suitable for the user to search for a series of words.

[0013] For example, when the beginner thinks the search characters to be searched for are “word+a preposition”, but the search characters actually are “word+infinitive”, it will be difficult for the beginner to find correct meanings of such search characters.

[0014] Further, in searching for a phrase though the dictionary specialized in phrases, the meaning of the phrase to be searched for varies depending on a main word contained in such phrase. As described above, even if the user any electronic dictionary, it is difficult for the user to search for the search characters consisting of plural words through the electronic dictionary to learn an appropriate meanings.

SUMMARY OF THE INVENTION

[0015] The present invention has been made to solve the problems or the inconveniences set forth above, and according to one aspect of the invention there is provided an information displaying apparatus and a computer program for displaying appropriate explanation information concerning a desired keyword, allowing a user to search for his or her desired word in an easy and simple way.

[0016] According to another aspect of the invention, there is provided an information display apparatus having a display device, which has a storage storing explanation information concerning keywords, and in which a keyword is searched through the explanation information stored in the storage by a keyword searching unit, and plural keywords found by the keyword searching unit are displayed in a list form on the display device together with a part of explanation information concerning each of the found keywords, and when either of the plural keywords displayed in a list form on the display device is designated, plural pieces of explanation information concerning the designated keyword are displayed in a list form by an explanation-information display control unit over the displayed explanation information concerning each of the keywords in an overlapping manner and further displayed in such fashion that the explanation information concerning the designated keyword and the designated keyword. are associated with each other.

[0017] According to yet another aspect of the invention, there is provided an information displaying apparatus, which has a storage storing keywords and plural pieces of explanation information concerning each keyword, and in which when search characters including a series of words are entered through a search character input unit, either of the series of words is searched for through the keywords stored in the storage by a keyword searching unit, and an explanation-information judging unit judges whether or not the series of words are included in any of the plural pieces of explanation information concerning the keyword found by the keyword searching unit, and a searched-information display unit displays the piece of the explanation information together with the keyword, in which explanation information the explanation-information judging unit determines the series of words are included.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate presently preferred embodiments of the invention, and together with the general description given above and the detailed description of the preferred embodiments given below, serve to explain the principles and the scope of the invention.

[0019]FIG. 1 is a block diagram illustrating an electronic circuit configuration of an electronic dictionary with a communication function (communication electronic-dictionary) 10, that is, an information displaying apparatus according to embodiments of the present invention;

[0020]FIG. 2 is a view showing a keyword table 12 b of the communication electronic-dictionary 10, in which table data are stored;

[0021]FIG. 3 is a view showing an explanation-information table 12 c of the communication electronic-dictionary 10, in which table data are stored;

[0022]FIG. 4 is a view showing a correspondence-data table 12 g of the communication electronic-dictionary 10, in which table data are stored;

[0023]FIG. 5 is a flowchart showing an information displaying procedure (#1) performed in a dictionary search operation in the communication electronic-dictionary 10;

[0024]FIG. 6 is a flowchart showing an information displaying procedure (#2) performed in the dictionary search operation in the communication electronic-dictionary 10;

[0025]FIG. 7 is a flowchart showing a phrase-usage searching procedure performed in the information displaying procedure in the communication electronic-dictionary 10.

[0026]FIGS. 8A and 8B are views illustrating a processed state (#1) in the information displaying procedure in the dictionary search operation of the communication electronic-dictionary 10.

[0027]FIGS. 9C and 9D are views illustrating the processed state (#2) in the information displaying procedure in the dictionary search operation of the communication electronic-dictionary 10.

[0028]FIG. 10 is a flowchart showing an information displaying procedure (#1) performed in the dictionary search in the communication electronic-dictionary 10.

[0029]FIG. 11 is a flowchart showing the information displaying procedure (#2) performed in the dictionary search in the communication electronic-dictionary 10.

[0030]FIG. 12 is a flowchart of a keyword selecting procedure performed in the information displaying procedure of the communication electronic-dictionary 10.

[0031]FIG. 13 is a flowchart of a plural-word search procedure performed in the information displaying procedure of the communication electronic-dictionary 10. In the plural-word search procedure, plural words are searched through the explanation data.

[0032]FIGS. 14A, 14B and 14C are views illustrating display screens displayed when a search character string consisting of one word is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0033]FIGS. 15A and 15B are views illustrating the first examples of display screens (#1) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0034]FIGS. 16C and 16D are views illustrating the first examples of display screens (#2) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0035]FIGS. 17A and 17B are views illustrating the second examples of display screens (#1) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0036]FIGS. 18C and 18D are views illustrating the second examples of display screens (#2) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0037]FIGS. 19A, 19B and 19C are views illustrating the third examples of display screens displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0038]FIGS. 20A and 20B are views illustrating the forth examples of display screens displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

[0039]FIGS. 21A and 21B are views illustrating the fifth examples of display screens displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search operation of the communication electronic-dictionary 10.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] Now, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0041]FIG. 1 is a block diagram showing a configuration of an information display apparatus according to an embodiment of the present invention, that is, a configuration of an electronic circuit of an electronic dictionary 10 with a communication function.

[0042] The electronic dictionary 10 with a communication function comprises a computer, which operates under control of a program stored in various recording media, or under control of a program transferred externally. The computer is provided with an electronic circuit including a central processing unit (CPU) 11.

[0043] The CPU 11 serves to control operations of various circuits in accordance with instructions of a control program such as an electronic-dictionary control program previously stored in a memory 12, an electronic-dictionary control program read out from an external recording medium 13 such as ROM card and stored in a recording device 14, and an electronic-dictionary control program read into the memory 12 from a Web server (a program server) 20 on the Internet N via a communication unit 15. The electronic-dictionary control program stored in the memory 12 is activated by a input signal responding to a user's operation performed on an input unit 17 including keys and a touch panel, or by a communication signal for communicating with the Web server 20 on the Internet N connected via the communication unit 15.

[0044] The CPU 11 is connected with the memory 12, the recording device (or a recording medium reading unit) 14, the communication unit 15, and the input unit 17, and further connected with a display device 18 including a liquid crystal display unit (LCD). The memory 12 of the electronic dictionary 10 with a communication function comprises a combination of ROM, Flash memory (EEP-ROM) and RAM.

[0045] In the memory 12 are stored a system program for controlling a whole operation of the electronic dictionary 10 with a communication function, a communication program for exchanging data with the Web server 20 on the Internet N via the communication unit 15, and the electronic-dictionary control program 12 a for performing an information display procedure which is to be performed in a dictionary search.

[0046] The memory 12 is provided with a key word table 12 b, an explanation data table 12 c, a dictionary-content data memory 12 d, an input search-word memory 12 e, a search keyword list memory 12 f, a correspondence-data table 12 g, a designated keyword memory 12 h, a designated explanation item memory 12 i, and a work area 12 j.

[0047]FIG. 2 is a view showing the keyword table 12 b of the electronic dictionary 10 with table data stored therein.

[0048] In the keyword table 12 b are stored a number of combination data each including an index number, a keyword, a storage address, and heading data of explanation data (first several characters of explanation data) contained in a dictionary. The heading data of first several characters included in the explanation data corresponding to a keyword includes the number of characters to the extent that a user can understand the meaning of the explanation data or to the extent that can be contained in a data list displayed on the display device 18 (refer to a display screen of a search keyword list G2, shown in FIG. 9C) FIG. 3 is a view illustrating the explanation data table 12 c of the electronic dictionary 10 with table data stored therein. In the explanation data table 12 c are stored heading data (including the predetermined number of characters) of plural explanation items (explanation data) for each key word of various dictionaries stored in the dictionary content data memory 12 d together with the corresponding index number, explanation number, and storage address. The heading data of each explanation item includes the number of characters to the extent that the user can understand the meaning of the explanation data or to the extent that can be contained in a data list displayed on the display device 18 (refer to a display screen of a search keyword list G2, shown in FIG. 8B)

[0049] In the dictionary-content data memory 12 d are stored data bases to be retrieved or searched in accordance with the electronic-dictionary control program 12 a, that is, contents of various kinds of dictionaries such as an English-Japanese Dictionary, a Japanese-English Dictionary, a Japanese Dictionary, an Encyclopedia, a Technical-Term Dictionary, Kojien (TM., Japanese dictionary), and a Katakana Dictionary (Japanese dictionary).

[0050] In the input search-word memory 12 e are stored a series of characters to be retrieved or searched, that is, keywords consisting of a word or a series of words entered in a dictionary search (the information display procedure).

[0051] In the search keyword list memory 12 f are stored searched keyword list data, that is, all the keywords which coincide with or include a search character string searched in dictionary contents stored in the dictionary-content data memory 12 d. FIG. 4 is a view illustrating the correspondence-data table 12 g of the electronic dictionary 10 with table data stored therein. In a phrase-usage search procedure performed in the information displaying procedure in the dictionary search operation, when search characters stored in the input search-word memory 12 e include a series of words, a main word in the series of words is searched for. When plural pieces of explanation information concerning the searched main word (keyword) includes data of “˜” and data of “S,V,O”, the data of “˜” and data of “V” are replaced with the main word the plural pieces of explanation information, and when the search characters consisting of the series of words are included in the plural pieces of explanation information in which data of “˜” and data of “V” are replaced with the main word (the keyword), an index number of the keyword, and a number of the corresponding explanation content with a flag, a “sample” mark, and a “phrase” mark added are stored in a correspondence-data table 12 g. The flag indicates that corresponding data has been found, and the “sample” mark, and the “phrase” mark indicate that a related sample sentence and a related phrase are explained the explanation information, respectively. The “sample” mark is associated with the flag, when a character string which coincides with the keyword of the series of words is contained in the middle of the explanation content, and the “phrase” mark is associated with the flag, when a character string which coincides with the keyword of the series of words is contained at the head of the explanation content.

[0052] In other words, the index number and the number of the explanation content are indicated in the correspondence-data table 12 g, when a phrase which coincides with the search characters consisting of the series of words are contained in the explanation content or when a sample sentence using the search characters consisting of the series of words is contained in the explanation content.

[0053] In the designated keyword memory 12 h is stored the number of the keyword designated by the user in a list of keywords corresponding to the input search character string stored in the search keyword list memory 12 f.

[0054] In the designated explanation item memory 12 i is stored the number of the explanation content (explanation item) designated by the user among the plural explanation contents corresponding to the keyword designated by the user in the search keyword list. In the work area 12 j are temporarily stored various data according to need, which are input to or output from the CPU 11 in various processing operations in the electronic dictionary 10.

[0055] Now, operation of the information display apparatus of the above described configuration (the electronic dictionary with a communication function) 10 (hereafter, a “communication electronic-dictionary”) in the first embodiment will be described.

[0056]FIG. 5 is a flow chart showing an information displaying procedure (#1) performed in the dictionary search in the communication electronic-dictionary 10.

[0057]FIG. 6 is a flow chart showing an information displaying procedure (#2) performed in the dictionary search in the communication electronic-dictionary 10.

[0058]FIG. 7 is a flow chart showing a phrase-usage searching procedure performed in the information displaying procedure in the communication electronic-dictionary 10.

[0059]FIGS. 8A and 8B are views illustrating a processed state (#1) in the information displaying procedure in dictionary search of the communication electronic-dictionary 10.

[0060]FIGS. 9A and 9B are views illustrating a processed state (#2) in the information displaying procedure in dictionary search of the communication electronic-dictionary 10.

[0061] At first a search mode is set by manipulation of an “English-Japanese” key 17 a in the input unit 17, and when a search character string, for example, such as “kind to” are entered with a search-word input screen G1 (refer to FIG. 8A) displayed on the display device 18, and a “translation/determination” key 17 b is manipulated, then data of the entered search character string “kind to” is stored in the input search-word memory 12 e at Step S1 in the information displaying procedure shown in FIG. 5.

[0062] It is judged at Step S2 whether or not the input search word “kind to” stored in the input search-word memory 12 e includes plural words.

[0063] When it is determined at Step S2 that the input search word includes plural words such as “kind” and “to”. a keyword search is performed with respect to the heading word “kind” through dictionary data of an English-Japanese Dictionary stored in the dictionary-content data memory 12 d, and plural keywords such as “kind1”, “kind2”, “kind·a,-· er”, etc., which coincide with “kind” or include “kind” will be searched for and stored in the search keyword list memory 12 f at Step S3 a. Then, the phrase-usage searching procedure begins at Step SA and is performed in accordance with the flow chart shown in FIG. 7. In the phrase-usage searching procedure shown in FIG. 7, the keyword “kind1” is selected from among the plural keywords “kind1”, “kind2”, “kind·a ,-· er”, etc stored in the search keyword list memory 12 f at Step A1, and then the first explanation item is designated in the plural explanation items corresponding to the selected keyword at Step A2.

[0064] Content data of the designated explanation item is read out to the work area 12 j at Step A3, and data of “˜” contained in the content data is replaced with the keyword “kind” at Step A4. At Step A5, it is judged whether or not a series of words or the content data with data of “˜” replaced with the keyword “kind” coincide with or include a series of characters to be searched for, that is, “kind to” stored in the input search-word memory 12 e.

[0065] When it is determined at Step A5 that the series of words or the content data with data of “˜” replaced with the keyword “kind” become a series of words starting with “kind to” and coincide with the series of characters to be searched for, that is, “kind to”, or come to the series of characters including “kind to”, a mark or a flag representing that characters to be searched for or suitable characters have been found or searched is set in the correspondence-data table 12 g together with the corresponding index number and explanation number at Step A6. When NO at Step A5, or when it is determined at Step A5 that the series of words or the content data with data of “˜” replaced with the keyword “kind” do not coincide with the series of characters to be searched for, that is, “kind to”, or do not come to the series of characters including “kind to”, or when the mark or the flag representing that characters to be searched for or suitable characters have been found or searched is set in the correspondence-data table 12 g at Step A6, it is judged at Step A7 whether or not the following explanation item has been prepared in the explanation items corresponding to the designated keyword “kind”.

[0066] When it is determined at Step A7 that the following explanation item has been prepared, the following explanation item is designated at Step A8 and the procedure returns to a process at Step A3 and the similar processes at Step A3 through Step A5 are performed with respect to the following explanation item. As set forth above, in a first keyword search for searching the search character string of “kind to”, the first keyword “kind1” is searched, and is stored in the search keyword list memory 12 f. Then, each explanation item for the first keyword “kind1” is processed such that data of “˜” included therein are replaced with the keyword “kind”, and it is judged whether or not the resulting explanation item coincides with or includes the search character string of “kind to”. When YES, the mark or flag is set to the corresponding index number and the explanation number in the correspondence-data table 12 g. Then, the following keyword “kind2” stored in the search keyword list memory 12 f is designated at Step A10.

[0067] With respect to the following keyword “kind2” searched in the first keyword search for searching for the search character string of “kind to”, each explanation item for the keyword “kind2” is processed such that data of “˜” included therein are replaced with the keyword “kind”, and it is judged whether or not the resulting explanation item coincides with or includes the search character string of “kind to”. When YES, the mark or flag is set to the corresponding index number and the explanation number in the correspondence-data table 12 g. (FIG. 7: Step A3 through Step A8).

[0068] As described above, when the phrase-usage search procedure for searching for the search character string consisting of plural words has finished with respect to each of the searched keywords, the searched keywords “kind1” 31 a, “kind2” 31 b and “kind· a, -· er” 31 c are written into a left side area of the search keyword list display-screen G2 displayed on the display device 18 as shown in FIG. 8B. (FIG. 5: Step SA through Step S4).

[0069] Meanwhile, when it is determined at Step S2 that the input search-word stored in the input search-word memory 12 e includes only a single word, the keyword search is performed with respect to the single word through the dictionary data stored in the dictionary-content data memory 12 d, and plural keywords 31 a, 31 b, etc, which coincide with or include the search word are searched and stored in the search keyword list memory 12 f at Step 3 b. As shown in FIG. 8B, these searched keywords 31 a, 31 b, etc. are written into the left area in the search keyword list display-screen G2 displayed on the display device 18 to be shown by a list at Step S4.

[0070] The heading keyword 31 a among the plural keywords 31 a, 31 b, etc shown by a list in the left area of the search keyword list display-screen G2 is designated and stored in the designated keyword memory 12 h at Step S5, and the heading data (including several characters) 32 a, 32 b, etc. of the explanation content for each of the plural keywords 31 a, 31 b, etc, shown by a list are read out from the keyword table 12 b shown in FIG. 2, and are shown by a list in a right area of the search keyword list display-screen G2 so as to correspond respectively to the keywords 31 a, 31 b,etc, as shown in FIG. 9C at Step S6.

[0071] The heading data (the predetermined number of characters) 33 a, 33 b, etc, included in the explanation items for the designated keyword 31 a (for instance, keyword: “kind1”, index number: 245) stored in the designated keyword memory 12 h are read out from the explanation data table 12 c shown in FIG. 3 at Step S7, and are displayed by a list in an overlapping manner on the heading data 32 a, 32 b, etc. included respectively in the keywords 31 a, 31 b, etc, which have been displayed in the right area of the search keyword list display-screen G2 as shown in FIG. 8B at Step S8.

[0072] Then, an explanation item (for instance, No. 5) of the search keyword “kind to”, which item has corresponding data, is discerned in accordance with the flags set in the correspondence-data table 12 g with respect to explanation items 33 a, 33 b, etc. (No. 1, 2, 3, . . . ,n) for the designated keyword 31 a (for instance, keyword: “kind1”, index number: 245), and is displayed in a highlighted manner 34, 35 such as in red, in bold, or in a reversed manner, as shown in FIG. 8B at Step S9. Then, a list display area including the designated keyword 31 a (for example, “kind1”) and the heading data 33 a, 33 b, etc. included in the corresponding explanation items are surrounded by a balloon 36 and displayed at Step S10. Further, the keyword “kind1” 31 a is displayed in the highlighted manner 34 at Step S11.

[0073] If all the heading data 33 a, 33 b, etc. included in the explanation items for the designated keyword 31 a can not be displayed within the search-keyword list screen display G2, the balloon 36 with a break 37 for surrounding the keyword and the heading data is displayed and indicates that there are additional explanation items which are not displayed within the balloon 36.

[0074] When the designated keyword among the keywords 31 a, 31 b, etc. displayed on the left area of the search-keyword list display screen G2 is changed form “kind1” 31 a to “kind2” 31 b by placing a cursor 17 c over “kind2” on the search-keyword list display screen G2 as shown in FIG. 9C at Step S12 (FIG. 6), the procedure returns to the process at S6, where the heading data 32 a, 32 b, etc. included in the plural pieces of explanation content corresponding respectively to the keywords are displayed by a list. At Step S7 and Step S8, the heading data 33 a, 33 b, etc. included in plural explanation contents corresponding to the designated keyword “kind2” 31 b with the cursor 17 c placed over are displayed. The highlighting display 35 is performed t Step S9 to discerning the heading data including the search character string from others, and a balloon display 36 is performed at Step S10, and further the highlighting display 34 is performed to discerning the designated keyword from other keywords at Step S11, in the similar manner as set forth above with respect to the previously designated keyword “kind1”.

[0075] When a heading data is designated among the heading data 33 a, 33 b, etc. included in the explanation items corresponding to the designated keyword by moving the cursor 17 c on the search keyword list display-screen G2 at Step S13, the highlighting display 35 is performed with respect to the newly designated heading data, that is, the newly designated data is displayed in a reversed manner, at Step S14.

[0076] When a correspondence-data key (not shown) in the input unit 17 is manipulated at Step S15, the heading data of the following explanation item is displayed in a highlighted manner 35 at Step S16 in accordance with the explanation numbers of the search character string to which the flag are set in the correspondence-data table 12 g.

[0077] When the “translation/determination” key 17 b is manipulated at Step S17 with the desired-keyword selected and displayed in the highlighting manner 34 in the search keyword list display-screen G2, the explanation content of the selected keyword stored in the dictionary-content data memory 12 d is successively read out from the heading explanation item to display an explanation content display-screen G3 on the display device 18 as shown in FIG. 9D at Step S18.

[0078] When the search character string including plural words (for example, “kind to”) are included in the content data of the explanation item corresponding to the designated keyword on the explanation content display-screen G3, a block of data including the search character string, such as “S is kind to do” is displayed in other color, in highlighted characters or in other font (a search character-string highlighting display 37). (Step S19 and Step S20)

[0079] When the “translation/determination” key 17 b is manipulated at Step S21 with an explanation item selected from among the explanation items 33 a, 33 b, etc. by moving the cursor 17 c and displayed in the highlighted manner 35 (Step S13, Step S14), or with an explanation item including the search character string selected by manipulation of the correspondence-data key and displayed (the highlighted display 35) (Step S15, Step S16), the explanation content corresponding to the selected explanation item is successively read out from the dictionary content data memory 12 d to display the explanation content display-screen G3 on the display device 18 at Step S22.

[0080] When the search character string including plural words appear in content data after the explanation item corresponding to the designated keyword displayed on the explanation content display-screen G3, a block of data including the search character string is displayed in other color, in highlighted characters or in other font (a search character string discerning display 37). (Step S19 and Step S20)

[0081] As described above, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, plural keywords 31 a, 31 b, etc. corresponding to the input search character string are read out from the dictionary-content data memory 12 d and are displayed by a list in the left area on the search keyword list display-screen G2, and the heading data 32 a, 32 b, etc. included in the explanation contents corresponding respectively to the keywords 31 a, 31 b, etc. are read out from the keyword table 12 b and are displayed in the right area on the search keyword list display-screen G2. When a keyword 31 is selected from among the plural keywords 31 a, 31 b, etc. displayed by a list, the heading data 33 a, 33 b, etc. included in the plural explanation contents corresponding to the selected keyword are read out from the explanation data table 12 c, and are displayed by a list in an overlapping manner in the right area on the search keyword list display-screen G2 where the heading data 32 a, 32 b, etc. included in the explanation contents corresponding to the keywords 31 a, 31 b, etc. are displayed. Therefore, when the user designates his/her desired keyword 31 while confirming the searched keywords 31 a, 31 b, etc. and the corresponding explanation contents 32 a, 32 b, etc., more detailed explanation contents 33 a, 33 b, etc. corresponding to the search keyword 31 are displayed, and the user is allowed to directly find and confirm the appropriate keyword 31 corresponding to the input search keyword string and its detailed explanation contents 33 a, 33 b, etc.

[0082] Further, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, the designated keyword 31 among the plural keyword 31 a, 31 b, etc. displayed by a list in the left area on the search keyword list display-screen G2 and the heading data 33 a, 33 b, etc. for the explanation items corresponding to the designated keyword 31 displayed by a list in the right area are surrounded by the balloon 36 for easy confirmation of the keyword and the explanation contents.

[0083] Furthermore, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, if all the heading data 33 a, 33 b, etc. for the explanation items corresponding to the keyword 31 designated in the left area on the search keyword list display screen G2 can not be displayed on the same search keyword list display screen G2, the balloon 36 surrounding these data is broken at the break 37, by which the user can understands that the designated keyword 31 has additional explanation items not displayed on the current display screen.

[0084] Further, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, since the heading data extracted from the searched keywords 31 a, 31 b, etc. and the explanation data 32 a, 32 b, etc. (33 a, 33 b, etc.) corresponding to the designated keyword 31 are prepared with the predetermined number of letters to the extent that the meanings thereof can be understood or to the extent that can be displayed within the search keyword list display-screen G2, the user can understand the meanings of the explanation data 32 a, 32 b, etc. (33 a, 33 b, etc.), even if only the heading data are displayed.

[0085] In the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, when the input search character string is a phrase including plural words, and further when the explanation contents 32 a, 32 b, etc. '33 a, 33 b, etc) corresponding to the searched keyword 31 include the character string including the plural words, the search word 31 and the explanation content 32 (33) are displayed in a highlighted manner 35 such as in other color, in bold, or in other font. Therefore, the user can easily find the portion including the search character string or the phrase in the explanation contents 32 a, 32 b, etc (33 a, 33 b, etc).

[0086] Further in the information displaying apparatus (the communication electronic-dictionary) 10 of the configuration set forth above, when the content data of the explanation items 33 a, 33 b, etc. corresponding to the designated keyword 31 are displayed on the explanation content display-screen G3, and when the content data contains a phrase including plural words, the phrase included in the content data is displayed in the highlighted manner 37 such as in other color, in bold or in other font, which allows the user to find the portion including the phrase.

[0087] Now, an operation of the information displaying apparatus (the communication electronic-dictionary) 10 of the configuration set forth above according to a second embodiment of the invention will be described.

[0088]FIG. 10 is a flowchart of an information displaying procedure (#1) performed in the dictionary search in the communication electronic-dictionary 10.

[0089]FIG. 11 is a flowchart of an information displaying procedure (#2) performed in the dictionary search in the communication electronic-dictionary 10.

[0090]FIG. 12 is a flowchart of a keyword selecting procedure performed in the information displaying procedure of the communication electronic-dictionary 10.

[0091]FIG. 13 is a flowchart of a plural-word search procedure performed in the information displaying procedure of the communication electronic-dictionary 10. In the plural-word search procedure, plural words are searched through the explanation data.

[0092]FIGS. 14A, 14B and 14C are views illustrating display screens displayed when a search character string consisting of one word is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0093]FIGS. 15A and 15B are views illustrating the first examples of display screens (#1) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0094]FIGS. 16C and 16D are views illustrating the first examples of display screens (#2) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0095]FIGS. 17A and 17B are views illustrating the second examples of display screens (#1) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0096]FIGS. 18C and 18D are views illustrating the second examples of display screens (#2) displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0097]FIGS. 19A, 19B and 19C are views illustrating the third examples of display screens displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0098]FIGS. 20A and 20B are views illustrating the forth examples of display screens displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0099]FIGS. 21A and 21B are views illustrating the fifth examples of display screens displayed when a search character string consisting of plural words is input in the information displaying procedure performed in the dictionary search of the communication electronic-dictionary 10.

[0100] For instance, when a search mode has been set in an English-Japanese dictionary in response to manipulation of “English-Japanese” key 17 a in the input unit 17 and a search character string of “kind” is entered with the search-word input screen G1 displayed on the display device 18 as shown in FIG. 14A, and when the “translation/determination” key 17 b is manipulated as shown in FIG. 14B, data related to the input keyword “kind” are in the input search-word memory 12 e at Step P1 in FIG. 10.

[0101] At Step P2, it is judged whether the search word “kind” stored in the input search-word memory 12 e includes plural words or not.

[0102] Since it is determined at Step P2 that the input search word “kind” does not include plural words, the procedure goes to a normal dictionary search, where the input search word “kind” is searched through the dictionary-content data (base) memory 12 d, and a keyword 131 b which coincides with the input search word “kind” and keywords 131 c, 131 d, etc. which include the input search word “kind” are searched and stored in the search keyword list memory 12 f. The searched keywords 131 b, 131 c, 131 d, etc are displayed in the left area of the search keyword list display screen G4 displayed on the display device 18.

[0103] In the right area of the search keyword list display screen G4 are displayed by a list the heading data 32 a, 32 b, etc. included respectively in the explanation contents of the keywords 131 a, 131 b, etc. stored in the keyword table 12 b (FIG. 2) so as to correspond respectively to the keywords 131 a, 131 b, etc. displayed in the left area of the search keyword list display screen G4.

[0104] Then, the first keyword “kind1” is designated as default word among the keywords 131 a, 131 b, etc. shown by a list in the search keyword list display screen G4, and the designated keyword “kind1” is highlighted at 134 as shown in FIG. 14B. The heading data 133 a, 133 b, etc. included in the explanation contents (items) of the designated keyword “kind1” are read out from the explanation data table 12 c (FIG. 3) and are displayed by a list over the heading data 32 a, 32 b, etc of each of the keywords 131 a, 131 b, etc. in a overlapped manner. The highlighted designated keyword “kind1” 134 and the corresponding heading data 133 a, 133 b, etc. included in the explanation contents are surrounded by a balloon 135, which makes it clear that the keyword “kind1” and the heading data 133 a, 133 b, etc are related.

[0105] When the keyword 131 to be designated and highlighted is changed by manipulation of the cursor key 17 c, the heading data 133 a, 133 b, etc included in the explanation contents of the newly designated keyword are read out and displayed with the balloon 135 surrounding them every time the other keyword is designated as shown in FIG. 14C.

[0106] Meanwhile, when, for instance, a search character string of “kind to” is entered with the search-word input screen G1 displayed on the display device 18 and the cursor key 17 c is manipulated at Step P1, as shown in FIG. 15, it is determined at Step S2 that the search character string includes plural words, the procedure advances to a process at Step PA (FIG. 10), where the keyword selecting procedure is performed in accordance with the flowchart shown in FIG. 10.

[0107] In the keyword selecting procedure PA, it is judged at Step Q1 whether the search character string includes any verb or not. If no verb is included, it is judged at Step Q3 whether the search character string includes any adjective or not. If no verb and no adjective are included, it is judged at Step Q5 whether the search character string includes any noun or not.

[0108] When it is determined at Step Q1 that the search character string includes a verb, the verb is designated as a main keyword to be searched at Step Q2. When it is determined that the search character string includes no verb, but includes an adjective, the adjective is designated as a keyword at Step Q4. Further, when it is determined that the search character string includes no adjective but includes a noun, then it is judged at Step Q6 whether the search character string includes plural nouns or not.

[0109] When it is determined at Step Q6 that the search character string includes plural nouns, the longest word among the plural nouns is designated as a keyword at Step Q7. If plural nouns of the same length are included in the search character string, the first appearing noun is designated as a keyword.

[0110] When the search character string does not include plural nouns but one noun, then the noun is designated as a keyword at Step Q8.

[0111] When the search character string consisting of plural words includes no verb. no adjective, or no noun, the first appearing word in the plural words is main keyword to be searched at Step Q9.

[0112] More specifically, with respect to the search character string consisting of plural words “kind to”, a word “kind” is designated as the main keyword to be searched for, ash shown in FIG. 15.

[0113] When a word is designated as the main keyword to be searched for with respect to the search character string consisting of plural words at Step PA, the keyword “kind” is searched through the keywords contained in an English-Japanese dictionary data stored in the dictionary-content data memory 12 d. Keywords “kind1”, “kind2”, etc. which coincide with the keyword “kind” are searched and stored in the search keyword list memory 12 f at Step P3 (FIG. 10), and the explanation contents corresponding to each of the searched keywords are read out at Step P4.

[0114] Then, the procedure advances to a plural-word search procedure shown in FIG. 13 at Step PB, where plural words are searched through the explanation data.

[0115] In the plural-word search procedure at Step PB, when the first appearing keyword “kind1” is designated among the plural keywords “kind1”, “kind2”, etc. stored in the search keyword list memory 12 f at Step R1 shown in FIG. 13, the first explanation item is designated among the explanation contents corresponding to the designated keyword at Step R2.

[0116] Content data of the designated explanation item is read out to the work area 12 j at Step R3, and it is judged at Step R4 whether data of “˜” is contained in the content data of the designated explanation item or not.

[0117] When it is determined that data of “˜” is contained in the content data of the designated explanation item, data of “˜” is replaced with the designated keyword “kind” at Step R5. It is judged at Step R6 whether the designated keyword is a verb, and when it is determined that the keyword is a verb, it is judged at Step R7 whether a mark data of “SV” is contained in the content data of the designated explanation item or not.

[0118] When it is determined that the mark data of “SV” is contained in the content data of the designated explanation item, the mark data of “SV” is replaced with data of [S+the designated keyword “kind”].

[0119] As described above, if data of “˜” is contained in the content data of the designated explanation item of the designated keyword, data of “˜” is replaced with designated keyword “kind”, and if the mark data of “SV” is contained in the content data of the designated explanation item, the mark data of “SV” is replaced with data of [S+the designated keyword “kind”]. Then, it is judged at Step R9 whether or not the character string consisting of plural words in the explanation content, whose data has been replaced as described above, coincides with or includes the search character string consisting of plural words, that is, “kind to”.

[0120] For example, when the content data of the designated item whose data of “˜” has been replaced with designated keyword “kind” becomes a character string starting with “kind to”, it is determined that the content data coincides with or includes the search character string “kind to”. Then, it is judged at Step R10 whether the explanation content begins with the search character string “kind to” or not.

[0121] When it is determined that the content data of the designated explanation item coincides with or includes the search character string and that the content data begins with the search character string, a mark (a flag) and a “phrase” mark are set or added to the index number of the content data and the corresponding explanation number in the correspondence-data table 12 g (FIG. 4) at Step R11. The flag represents that the explanation content coincides with the search character string and the “phrase” mark represents that the explanation content explains the phrase.

[0122] When it is determined that the content data of the designated explanation item contains a character string which coincides with or includes the search character string, and that the explanation content includes the character string not at the beginning of the explanation but in the middle thereof, a mark (a flag) and a “sample” mark are set or added to the index number of the content data and the corresponding explanation number in the correspondence-data table 12 g (FIG. 4) at Step R12. The flag represents that the explanation content coincides with the search character string and the “sample” mark represents that the explanation content explains a sample sentence.

[0123] When it is determined at Step R9 that the content data of the designated explanation item with data of “˜” replaced with the designated keyword or with a symbol data of “SV” replaced with [S+the designated keyword] does not coincide with nor include the search character string consisting of plural words, or when the mark (flag) is set together with the “phrase” mark or the “sample” mark in the correspondence table 12 g at Step R11 or Step R12, it is judged at Step R13 whether or not there is a next explanation item in the explanation content of the designated keyword “kind1”.

[0124] When it is determined that there is the following explanation item, the following explanation item is designated at Step R14, and the procedure returns to the process at Step R3. With respect to the newly designated explanation item, the similar processes are performed at Step R3 through Step R9, that is, the replacing process of replacing the data of with the designated keyword, and the replacing process of replacing the symbol data of “SV” with [S+the designated keyword] are performed and the coincidence judgment concerning the search character string consisting of plural words is performed.

[0125] With respect to the first keyword “kind1” that is searched in the keyword search for searching for the search character string consisting of plural words, “kind to”, and is stored in the search keyword list memory 12 f, it is judged whether or not the corresponding explanation item with the data of “˜” replaced with the keyword “kind” and with the symbol data of “SV” replaced with [S+the designated keyword] coincides with the search character string of “kind to”. When the corresponding explanation item coincides with the search character string, the “phrase” mark or the “sample” mark is set to the corresponding index number of the explanation item and the explanation number. Then, the further following keyword “kind2” stored in the search keyword list memory 12 f is designated at Step R16.

[0126] With respect to the second keyword “kind2” that is searched in the keyword search for searching for the search character string consisting of plural words, “kind to”, and is stored in the search keyword list memory 12 f, it is judged whether or not the corresponding explanation item with the data of “˜” replaced with the keyword “kind” and with the symbol data of “SV” replaced with [S+the designated keyword] coincides with the search character string of “kind to”. When the corresponding explanation item coincides with the search character string, the “phrase” mark or the “sample” mark is set to the corresponding index number of the explanation item and the explanation number. Step R3 through Step R14).

[0127] When a procedure has been performed with respect to all the keywords searched in the keyword search, in which procedure it is judged whether or not a search character string consisting of plural words is included in content data of the explanation items for the keywords searched in the keyword search, it is judged at Step S5 whether or not a keyword whose content data completely includes the search keyword string has been found among English-Japanese dictionary data stored in the dictionary-content data memory 12 d.

[0128] When the keyword whose content data completely includes the search keyword string has not been found among English-Japanese dictionary data stored in the dictionary-content data memory 12 d, another word is selected and designated as a new keyword among from the plural words included in the search character string at Step P6. With respect to the new keyword, a keyword search procedure is performed at Step P7, for searching for a word whose explanation content data completely includes the search character string including the new keyword. The explanation content data of the searched keywords are read out from the dictionary data at Step P8. Further, it is judged at Step PB where the search character string consisting of plural-word is included in content data of each of the explanation items corresponding to the keywords in a similar manner at Step P3, Step P4, and Step PB.

[0129] As described above, when a keyword whose explanation contents includes a search character string consisting of plural words is searched in the English-Japanese dictionary, the flag representing that the search character string is contained in the explanation contents of the searched keyword, the“phrase” mark representing that the explanation contents explain a phrase, and the “sample” mark representing that the explanation contents explain a sample sentense are associated with the explanation contents of the searched keyword. Then, the search character string consisting of plural words, “kind to” is searched through phrase-keywords in English-Japanese phrase dictionary data stored in the dictionary-content data memory 12 d, and the searched phrase-keywords coincident with the search character string “kind to” are stored in the search keyword list memory 12 f at Step P9, and the explanation content data of each of the searched phrase-keywords are read out at Step P10.

[0130] Then, with respect to the English-Japanese dictionary stored in the search keyword list memory 12 f, the search keywords 131 a, 131 b, etc. and explanation contents (heading data each including the search character string consisting of plural word) 136 a, 136 b, etc. of each of the search keywords 131 a, 131 b, etc. are displayed on the search keyword list display screen G4 of the display device 18. The displayed explanation contents each includes the search character string consisting of plural words and bears the “sample” mark 137 a or the “phrase” mark 137 bin accordance with the flags in the correspondence-data table 12 g (refer to FIG. 15B, FIG. 17B, and FIG. 20A). Further, with respect to the English-Japanese phrase dictionary, the searched phrase-keywords (for example, 131 c in FIG. 19 and 131 b in FIG. 21) and the explanation contents (with the “phrase” mark added) 136 a, 136 b, etc of each of the searched phrase-keywords are displayed on the search keyword list display screen G4 of the display device 18 (refer to FIG. 19B and FIG. 21B) at Step P11. The search keyword list display screen G4 in the first embodiment shown in FIG. 15 and FIG. 16, the search keyword list display screen G4 in the second embodiment shown in FIG. 17 and FIG. 18, and the search keyword list display screen G4 in the forth embodiment shown in FIG. 20 each illustrate the search key words 131 a, 131 b, etc. and explanation contents (heading data each including the search character string consisting of plural word, with the “sample” mark 137 a or the “phrase” mark 137 b added) 136 a, 136 b, etc. of each of the search keywords 131 a, 131 b, etc., which are to be displayed when the search character string has been searched for through the English-Japanese dictionary.

[0131] The search keyword list display screen G4 in the third embodiment shown in FIG. 19 and the search keyword list display screen G4 in the fifth embodiment shown in FIG. 21 illustrate the search keywords 131 a, 131 b, etc. and explanation contents (heading data each including the search character string consisting of plural word, with the “sample” mark 137 a or the “phrase” mark 137 b added) 136 a, 136 b, etc. of each of the search keywords 131 a, 131 b, etc., which are to be displayed when the search keyword has been searched for through the English-Japanese dictionary and the search phrase-keywords 131 a, 131 b, etc. and explanation contents (with the “sample” mark 137 a or the “phrase” mark 137 b added) 136 a, 136 b, etc. of each of the search search-keywords 131 a, 131 b, etc., which are to be displayed when the search phrase-keyword has been searched for through the English-Japanese phrase dictionary.

[0132] As described above, the search keyword list display screen G4 is generated at Step P21, on which keywords, and phrase-keywords, both found in the dictionary search for searching for the search character string consisting of plural word, and the heading data of the explanation contents (with the “sample” mark and the “phrase” mark added) of the searched keywords and phrase-keywords are displayed. The first appearing keyword 131 a among the plural keywords 131 a, 131 b, etc. is designated as the default keyword and highlighted as shown in FIG. 15B, FIG. 19B, FIG. 20A and FIG. 21B at Step P12, or the explanation content 136 a of the designated keyword 131 a is highlighted as shown in FIG. 17B at Step P13.

[0133] When the designated keyword is changed among the plural keywords 131 a, 131 b, etc. displayed on the left area of the search keyword list display screen G4 by moving the cursor 17 c as shown in FIG. 16C, FIG. 18C, and FIG. 19B at Step P15, the procedure returns to the process at Step P13, where the changed keyword 131 or the corresponding explanation content 136 is highlighted and the apparatus is brought into a state of waiting for the user's manipulation. On the other hand, when the cursor 17 c is moved from one heading data to other among the heading data 136 a, 136 b, etc. of the plural explanation items displayed on the search keyword list display screen G4 at Step P16, the heading data 136 to which the cursor 17 is moved is highlighted, foe example, as shown in FIG. 16C, and FIG. 19B, at Step P17.

[0134] As shown in FIG. 20A, when the “translation/determination” key 17 b is manipulated at Step P18 with the highlighted keyword 131 a “look” selected on the search keyword list display screen G4, the explanation contents 136 a for the selected keyword 131 a, “look” stored in the dictionary-content data memory 12 d are successively read out from the content data of the first explanation item and displayed on the display device b18 as the explanation-content display screen G5 at Step P19.

[0135] When it is determined that any of content data of the explanation items 136 a, 136 b, etc. corresponding to the designated keyword 131 a displayed on the explanation-content display screen G5 includes the search character string consisting of plural words, “look at”, or that any of content data of the explanation items 136 a, 136 b, etc. in which data of “˜” or data of “SV” enclosed therein are replaced with the designated keyword, “look” in accordance with the flag or setting data given in the correspondence-data table 12 g, includes the search character string consisting of plural words, “look at”, a block of data in the content data, including the search character string consisting of plural words, for example, a block of data of “SV at O” (FIG. 20B) is highlighted at 138 or is displayed in other color, in bold, or in other font at Step P21.

[0136] Meanwhile, when the “translation/determination” key 17 b is manipulated at Step P22 with an explanation item selected with the cursor 17 c from among explanation items 136 a, 136 b, etc. and highlighted at 134 as shown in FIG. 16C, FIG. 18C and FIG. 19B, the explanation contents of the explanation item 136 of the selected keyword 31 stored in the dictionary-content data memory 12 d are successively read out from the content data of the designated item 136 and displayed on the display device bl8 as the explanation-content display screen G5 at Step P23.

[0137] When it is determined that the search character string consisting of plural words (“kind to” and “kind of”) is included in content data of the explanation items following the explanation item 136 of the designated keyword 31 displayed on the explanation-content display screen G5 or that the search character string consisting of plural words is included in content data of the explanation items following the explanation item 136 of the designated keyword 31, in which content data data of “˜” or data of “SV” included therein is replaced with the keyword “kind” in accordance with the flag or the setting data given in the correspondence-data table 12 g, a block of data in the content data, including the search character string is highlighted at 138 or is displayed in other color, in bold, or in other font at Step P21.

[0138] More specifically, as illustrated in the first example shown FIG. 15A and FIG. 15B, and in the second example shown in FIG. 17A and FIG. 17B, when a search character string consisting of plural words, “kind to” is entered on the search-word input screen G1 and the “translation/determination” key 17 b is manipulated, a dictionary search procedure is performed with respect to a keyword, “kind”, which is selected and designated as an index word. Content data of explanation items including the search character string consisting of “kind to” are judged in explanation contents of plural keywords which coincide with the search keyword “kind”. In case that the corresponding keywords “kind1” 131 a, “kind2” 131 b, etc. and their heading data 136 a, 136 b, etc. explain sample sentences, the “sample” mark is added thereto and displayed on the search keyword list display screen G4, and in case that the corresponding keywords “kind1” 131 a, “kind2” 131 b, etc. and the heading data 136 a, 136 b, etc. explain phrases, the “phrase” mark is added thereto and displayed on the search keyword list display screen G4.

[0139] As shown in FIG. 16C and FIG. 16b or in FIG. 18C and FIG. 18D, when a desired explanation item 136 b for the desired keyword “kind2” 131 b is designated and highlighted by manipulating the cursor 17 c on the search keyword list display screen G4 and the “translation/determination” key 17 b is manipulated, the whole content data for the designated explanation item 136 b and the following items are read out and displayed as the explanation-content display screen G5.

[0140] On the explanation-content display screen G5, a block of data, “S is kind to do”, including the search character string consisting of plural words, “kind to” is highlighted or displayed in other color, in bold, or in other font, and therefore the user can easily find an explanation portion for the entered search character string consisting of plural words, “kind to”.

[0141] As illustrated in the third example shown FIG. 19A, when a search character string consisting of plural words “kind of” is entered on the search-word input screen G1 and the “translation/determination” key 17 b is manipulated, the dictionary search procedure is performed in the phrase dictionary in the dictionary with respect to the keyword “kind” designated as the index word, and the dictionary search procedure is performed in the phrase dictionary with respect to a phrase corresponding to the plural keywords “kind of”. Content data of the explanation item explaining the search character string consisting of plural words “kind of” is judged in the explanation contents for plural keywords which coincide with the keyword “kind”, and the corresponding keywords “kind1” 131 a, “kind2” 131 b, etc. and their heading data 136 a, 136 b, etc., with the “sample” mark and the “phrase” mark added are displayed on the search-keyword list screen display G4 and the keyword “kind of O” 131 c and its explanation content with the “phrase” mark added are displayed on the same search-keyword list screen display G4.

[0142] As shown in FIG. 19B and FIG. 19C, when the desired explanation item 136 e corresponding to the desired keyword “kind2” 131 b is highlighted on the search-keyword list display screen G4 by manipulation of the cursor key 17 c, and the “translation/determination” key 17 b is manipulated, the whole content data for the designated explanation item 136 e and the following items are read out and displayed as the explanation-content display screen G5.

[0143] When it is determined that the search character string consisting of plural words, “kind of” is included in the explanation content data displayed on the explanation-content display screen G5, in which content data data of “” is replaced with the keyword “kind”, a block of data in the explanation content data including “it is ˜ of S to do” is displayed at 138 in other color, in bold, or in other font, and therefore the user can easily find an explanation portion for the entered search character string consisting of plural words, “kind of”. The content data, “it is ˜ of S to do”, of the explanation item including the search character string consisting of plural words of “kind of” may be displayed as the content data “it is kind of S to do” in which data of “˜” is replaced with the keyword “kind” for easy search and clear understanding.

[0144] As illustrated in the fourth example shown in FIG. 20, a search character string consisting of plural words, “look at” is entered and the “translation/determination” key 17 b is manipulated, the dictionary search procedure is performed with respect to the designated keyword “look”. Content data of the explanation item explaining the search character string consisting of plural words “look at” is judged in the explanation contents for plural keywords which coincide with the keyword “look”, and the corresponding keywords “look” 131 a, and its heading data 136 a included in the explanation item with the “sample” mark or the “phrase” mark added are displayed on the search-keyword list screen display G4.

[0145] When the “translation/determination” key 17 b is manipulated with the first keyword 131 a designated and highlighted at 134 as the default word among the searched keywords on the search-keyword list display screen G4, the whole content data of the explanation item 136 a corresponding to the designated keyword “look” are read out and displayed as the explanation-content display screen G5.

[0146] When it is determined that the search character string consisting of plural words, “look at” is included in the explanation content data displayed on the explanation-content display screen G5, in which content data data of “˜” and data of “SV” is replaced with the keyword “look” and “S+look” respectively, a block of data in the explanation content data including “SV at O” is displayed at 138 in other color, in bold, or in other font, and therefore the user can easily find an explanation portion for the entered search character string consisting of plural words, “look at”.

[0147] The content data, “SV at O”, of the explanation item including the search character string consisting of plural words of “look at” may be displayed as the content data “S V=look at O” in which “V” in data of “SV” is replaced with the keyword “look” for easy search and clear understanding.

[0148] Further, as illustrated in the fifth example shown FIG. 21, when a search character string consisting of plural words, “in shape” is entered on the search-word input screen G1 and the “translation/determination” key 17 b is manipulated, the dictionary search procedure is performed with respect to a keyword, “shape”, which is selected and designated as an index word and the dictionary search procedure is performed with respect to plural keywords, “in shape”. Content data of explanation items including the search character string consisting of plural words, “in shape” are judged in explanation contents of plural keywords which coincide with the search keyword “shape”.

[0149] The corresponding keyword “shape” 131 a and its heading data 136 a, 136 b, etc. of the explanation items with the “sample” mark or “phrase” mark added are displayed by a list on the search keyword list display screen G4, and the searched keywords “in shape” 131 b and their explanation content with the “phrase” mark added are displayed by a list on the same search-keyword list screen display G4.

[0150] As described above, with respect to the search character string consisting of plural words, the keyword and its explanation content explaining the search keyword to be searched for are displayed together with the “sample” mark and/or the 2phrase” mark for easy search.

[0151] In the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, when a search character string consisting of plural words is entered, a verb, an adjective or a noun in the entered words is set as an index word, and plural keywords which coincide with the index word are searched from the English-Japanese dictionary, and explanation contents of the searched keywords are read out. Then, it is judged whether or not the read out explanation contents include the search character string consisting of plural wordst, or it is judged whether or not the read out explanation contents with data of “˜” replaced with the index word and data of “SV” replaced with “S+the index word” include the search character string consisting of plural words. The explanation contents 136 a, 136 b, etc. including the search character string consisting of plural words and their keywords 131 a, 131 b, etc. are display by a list on the search-keyword list display screen G4. When a desired explanation content is designated, the whole data of the designated explanation content is displayed on the explanation-content display screen G5. Therefore, even if the search character string consists of a phrase or a semi-phrase including plural words or a noun+a preposition, the corresponding keyword and the explanation contents may be searched and displayed.

[0152] Further, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, explanation contents which include the search character string including plural words are searched. The keyword 131 a, 131 b, etc. corresponding to the searched explanation contents and the heading data 136 a, 136 b, etc. included in the searched explanation contents are associated with each other and displayed on the left area and the right area of the search-keyword list display screen G4, respectively. The user can instantly find the keyword including the search character string and the explanation content on the search-keyword list display screen G4.

[0153] Still further, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, a verb, an adjective or a noun contained in the search character string consisting of plural words may be chosen as a keyword to be searched for. If the explanation contents of the searched keyword does not include the search character string consisting of plural words, other word in the search character string consisting of plural words is chosen as the keyword and the explanation contents that include the search character string consisting of plural word and their keyword may be searched and displayed without failure.

[0154] In the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, a keyword that coincides with the search character string consisting of plural words is searched through a Phrase dictionary, and the searched keyword and its explanation contents with the “phrase” mark added are displayed on the search-keyword list display screen G4. A keyword including plural words may be searched through English-Japanese dictionary and Phrase dictionary, wherein a simple and more detailed keyword and its explanation contents may be found and displayed.

[0155] Further, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, if the explanation contents corresponding to the searched keyword include data of “˜”, the data of “˜” is replaced with the keyword. Since it is judged whether or not the search character string consisting of plural words is included in the explanation contents, or whether or not the search character string consisting of plural words is included in the explanation contents with data of “˜” replaced with the keyword, the keyword having explanation of the search character string consisting of plural words may be searched even from data base of the English-Japanese dictionary without failure.

[0156] Still further, in the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, if the explanation contents corresponding to the searched keyword include data of “SV”, the data of “SV” is replaced with “S+keyword”. Since it is judged whether or not the search character string consisting of plural words is included in the explanation contents, or whether or not the search character string consisting of plural words is included in the explanation contents with data of “SV” replaced with “S+keyword”, the keyword having explanation of the search character string consisting of plural words may be searched even from data base of the English-Japanese dictionary without failure.

[0157] In the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, if the content data of the explanation items 136 a, 163 b, etc. include the search character string including a phrase consisting of plural words, the search character string portion in the content data is highlighted at 138 or displayed in other color, in bold, or in other font on the explanation-content display screen G5. Therefore, the user can find the search character string portion on the explanation-content display screen G5.

[0158] In the information displaying apparatus (communication electronic-dictionary) 10 of the configuration set forth above, the keywords having content data including a search character string consisting of plural words are displayed on the left area of the search-keyword list display screen G4 on the display device 18 and the heading data of the explanation contents are displayed on the right area of the search-keyword list display screen G4. If the explanation contents include the search character string as a sample sentence, the “sample” mark is added to the explanation contents. If the explanation contents include or explain the search character string as a phrase, the “phrase” mark is added to the explanation contents. Therefore, the user can easily find his/her desired explanation contents on the search-keyword list display screen G4.

[0159] The information displaying procedure (#1), (#2) in the dictionary search operation performed respectively in accordance with the flow charts shown in FIG. 10 and FIG. 11 in the information displaying apparatus (communication electronic-dictionary) 10 may be performed by a computer under program instructions and such program may be stored and distributed in an external storage 13 such as a memory card (ROM card, RAM card, etc.), a magnetic disc (floppy disc, hard disc, etc.), an optical memory disc (CD-ROM, DVD, etc.), a semiconductor memory. Similarly, the keyword selecting procedure in the information display procedure performed in accordance with the flow chart shown in FIG. 12 and the plural word searching procedure in the information displaying procedure performed in accordance with the flow chart shown in FIG. 13 may be performed by the computer under program instructions and such program may be stored and distributed in an external storage 13 such as a memory card (ROM card, RAM card, etc.), a magnetic disc (floppy disc, hard disc, etc.), an optical memory disc (CD-ROM, DVD, etc.), a semiconductor memory. Meanwhile, a computer terminal with a function of communicating with the Internet network reads the program stored in the external storage 13 into its own recording device 14, and performs the similar information display procedure in the dictionary search operation under the instructions of the program.

[0160] Program codes of such program may be transferred over the Internet network, and the computer terminal connected to the Internet network can read in the program codes and therefore the information display procedure in the dictionary search may be performed by such computer terminal.

[0161] Further modification and variation can be made to the disclosed embodiments without departing from the subject and spirit of the invention as defined in the following claims. Such modification and variations, as included within the scope of these claims, are meant to be considered part of the invention as described. 

What is claimed is:
 1. An information display apparatus having a display device, comprising: a storage storing explanation information concerning keywords; a keyword searching unit for searching for a keyword through the explanation information stored in the storage; a keyword display control unit for displaying in a list form on the display device plural keywords found by the keyword searching unit together with parts of explanation information respectively concerning the found keywords; a keyword designating unit for designating either of the plural keywords displayed on the display device by the keyword display control unit; and an explanation-information display control unit for displaying in a list form on the display device plural pieces of explanation information concerning the keyword designated by the keyword designating unit in such fashion that the explanation information is associated with the designated keyword, over the parts of the explanation information respectively concerning the found keywords displayed by the keyword display control unit in an overlapping manner.
 2. The information displaying apparatus as recited in claim 1, wherein the keyword display control unit displays in a list form the plural keywords found by the keyword searching unit in a first display area on the display device and further displays the parts of the explanation information of the plural keywords in a second display area adjacent to the first display area on the display device in such manner that both the explanation information and the keywords displayed in the first display area are associated with each other, and the keyword designating unit designates one of the plural keywords that are displayed in the first display area by the keyword display control unit, and the explanation-information display control unit displays in a list form the plural pieces of explanation information concerning the keyword designated by the keyword designating unit over the parts of the explanation information that are displayed in the second display area by the keyword display control unit in an overlapping manner, and further displays a balloon corresponding to the designated keyword so as to surround the plural pieces of explanation information.
 3. The information displaying apparatus as recited in claim 2, wherein, when all the plural pieces of explanation information concerning the designated keyword can not be displayed within the second display area, the explanation-information display control unit displays a partially broken balloon around the plural pieces of explanation information displayed in the second display area to indicate that there is at least an additional piece of explanation information that is not displayed in the second display area.
 4. The information displaying apparatus as recited in claim 1, wherein the keyword display control unit displays first predetermined number of characters included in each of the parts of the explanation information; and the explanation-information display control unit displays first predetermined number of characters included in each of the plural pieces of explanation information of the designated keyword.
 5. The information displaying apparatus as recited in claim 2, wherein the keyword display control unit displays in the second display area the predetermined number of characters included in each of the parts of the explanation information of the keywords to the extent that such number of characters can be displayed within the second display area, and the explanation-information display control unit displays in the second display area the predetermined number of characters included in each of the plural pieces of explanation information of the designated keyword over the parts of the explanation information displayed in the second display area to the extent that such number of characters can be displayed within the second display area.
 6. The information displaying apparatus as recited in claim 1, further comprising: a designated-keyword changing unit for changing a designated keyword from the previously designated keyword to other keyword; wherein the explanation-information display control unit displays in a list form the plural pieces of explanation information concerning the designated keyword changed by the designated-keyword changing unit over the explanation information concerning the keywords displayed in a list form by the keyword display control unit.
 7. The information displaying apparatus as recited in claim 1, further comprising: an explanation-information selecting unit for selecting either of the plural pieces of explanation information displayed in a list form; and an explanation-information selection display control unit for displaying on the display device all the piece of explanation information selected by the explanation-information selecting unit.
 8. The information displaying apparatus as recited in claim 1,further comprising: a search-character input unit for inputting search characters; wherein, when the search characters consisting of one word are entered through the search-character input unit, the keyword searching unit searches for a keyword through the keywords stored in the storage, which keyword coincides with the word included in the entered search characters, and when the search characters consisting of plural words are entered through the search-character input unit, the keyword searching unit searches for a keyword through the keywords stored in the storage, which keyword coincides with or includes a predetermined one of the plural words included in the entered search characters, and the apparatus further comprising: a first search-character judging unit for judging whether or not the search characters consisting of plural words entered through the search-character input unit are included in the explanation information concerning each of the keywords displayed by the keyword display control unit; and a highlight control unit for displaying a keyword corresponding to the explanation information, in which the first search-character judging unit determines the search characters consisting of plural words are included, in a different way from other keywords.
 9. The information displaying apparatus as recited in claim 8, further comprising: a keyword selecting unit for selecting either of the plural keywords displayed in a list form on the display device by the keyword display control unit; a selected-keyword explanation-information display control unit for displaying the whole explanation information concerning the keyword selected by the keyword selecting unit; a search-character locating unit for locating a portion in the explanation information displayed by the selected-keyword explanation-information display control unit, in which portion the search characters consisting of plural words entered through the search-character input unit are included; and a first search-character highlight display control unit for displaying the portion in the explanation information located by the search-character locating unit in a different manner from other portions.
 10. The information displaying apparatus as recited in claim 8, further comprising: a second search-character judging unit for judging whether or not the search characters consisting of plural words entered through the search-character input unit are included in the plural pieces of explanation information displayed by the explanation-information display control unit; and an explanation-information highlight display control unit for displaying a piece of explanation information, in which the second search-character judging unit determines the search characters consisting of plural words are included, in a different way from other explanation information.
 11. The information displaying apparatus as recited in claim 7, further comprising: a search-character input unit for inputting search characters; wherein, when the search characters consisting of one word are entered through the search-character input unit, the keyword searching unit searches for a keyword through the keywords stored in the storage, which keyword coincides with the word included in the entered search characters, and when the search characters consisting of plural words are entered through the search-character input unit, the keyword searching unit searches for a keyword through the keywords stored in the storage, which keyword coincides with or includes a predetermined one of the plural words included in the entered search characters, and the apparatus further comprising: a search-character locating unit for locating a portion in the explanation information displayed by the explanation-information selection display control unit, in which portion the search characters consisting of plural words entered through the search-character input unit are included; and a second search-character highlight display control unit for displaying the portion in the explanation information located by the search-character locating unit in a different manner from other portions.
 12. The information displaying apparatus as recited in claim 8, wherein the first search-character judging unit replaces data of “˜” contained in the explanation information with a predetermined word included in the search characters consisting of the plural words entered through the search-character input unit, and judges whether or not the entered search characters consisting of the plural words are included in the explanation information with the data of “˜” replaced with the predetermined word.
 13. The information displaying apparatus as recited in claim 9 or claim 11, wherein the search-character locating unit replaces data of “˜” contained in the explanation information with a predetermined word included in the search characters consisting of the plural words entered through the search-character input unit, and locates a portion in the explanation information with the data of “˜” replaced with the predetermined word, in which portion the entered search characters consisting of the plural words are included.
 14. A recording medium storing a computer readable program for controlling a computer that works to perform an information displaying procedure in an information displaying apparatus provided with a display device, which program comprises: a step of making the computer store explanation information concerning keywords; a step of making the computer search for a keyword through the stored explanation information; a step of making the computer display in a list form on the display device plural searched keywords together with parts of explanation information respectively concerning the searched keywords; a step of making the computer designate either of the plural keywords displayed on the display device; and a step of making the computer display in a list form on the display device plural pieces of explanation information concerning the designated keyword in such fashion that the explanation information is associated with the designated keyword, over the parts of the explanation information displayed on the display device, in an overlapping manner.
 15. An information displaying apparatus having a display device, comprising: a storage storing keywords and plural pieces of explanation information concerning each keyword; a search character input unit for inputting search characters containing a series of words; a keyword searching unit for searching for one of the series of words entered through the search character input unit through the keywords stored in the storage; an explanation-information judging unit for judging whether or not the series of words entered through the search character input unit are included any of the plural pieces of explanation information concerning the keyword searched by the keyword searching unit; and a searched-information display unit for displaying on the display device a piece of the explanation information together with the keyword, in which piece of explanation information the explanation-information judging unit determines the series of words are included.
 16. The information displaying apparatus as recited in claim 15, wherein the searched-information display unit displays a keyword of each of the plural pieces of explanation information in which the explanation-information judging unit determines the series of words are included, together with parts of plural pieces of explanation information.
 17. The information displaying apparatus as recited in claim 15, wherein the keyword searching unit has a keyword selecting unit for selecting a word out of the series of words entered through the search character input unit; wherein the keyword searching unit searches for the word selected by the keyword selecting unit through the keywords stored in the storage.
 18. The information displaying apparatus as recited in claim 17, wherein the keyword selecting unit selects as a keyword either of a noun, a verb and an adjective included in the series of words entered through the search character input unit.
 19. The information displaying apparatus as recited in claim 17, further comprising: an other-keyword selecting unit for selecting a word to be searched for other than the word selected by the keyword selecting unit, when the explanation-information judging unit determines that there is no explanation information including any of the series of words entered through the search character input unit.
 20. The information displaying apparatus as recited in claim 15, wherein the keyword searching unit searches for the whole of the series of words entered through the search character input unit through the keywords stored in the storage, and the searched-information display unit displays the explanation information in which the explanation-information judging unit determines the series of words are included, together with the keyword, and further displays keywords consisting of the series of words searched by the keyword searching unit.
 21. The information displaying apparatus as recited in claim 15, wherein the explanation-information judging unit replaces data of “˜” included in the explanation information concerning the keyword searched by the keyword searching unit with a word selected to be searched for from among the series of words entered through the search character input unit, and judges whether or not the entered series of words are included in the explanation information in which data of “˜” is replaced with the selected word.
 22. The information displaying apparatus as recited in claim 21, wherein the searched-information display unit replaces data of “˜” included in the explanation information with a word selected to be searched for from among the series of words entered through the search character input unit, in which explanation information the explanation-information judging unit determines the series of words are included, and displays the explanation information in which data of “˜” is replaced with the selected word, together with the corresponding keyword.
 23. The information displaying apparatus as recited in claim 15, wherein the explanation-information judging unit replaces word-class data of “V” included in the explanation information concerning the keyword searched by the keyword searching unit with a word selected to be searched for from among the series of words entered through the search character input unit, and judges whether or not the entered series of words are included in the explanation information in which the word-class data of “V” is replaced with the selected word.
 24. The information displaying apparatus as recited in claim 23, wherein the searched-information display unit replaces word-class data of “V” included in the explanation information with a word selected to be searched for from among the series of words entered through the search character input unit, in which explanation information the explanation-information judging unit determines the series of words are included, and displays the explanation information in which the word-class data of “V” is replaced with the selected word, together with the corresponding keyword.
 25. The information displaying apparatus as recited in either of claim 1 through claim 10, further comprising: a second keyword selecting unit for selecting either of the plural keywords displayed by the searched-information display unit; a second selected-keyword explanation-information display control unit for displaying the whole explanation information concerning the keyword selected by the second keyword selecting unit; a second search-character locating unit for locating a portion in the explanation information displayed by the second selected-keyword explanation-information display control unit, in which portion the search characters consisting of plural words entered through the search-character input unit are included; and a third search-character highlight display control unit for displaying the portion in the explanation information located by the second search-character locating unit in a different manner from other portions.
 26. The information displaying apparatus as recited in claim 15, wherein the searched-information display unit displays the explanation information with a “sample” mark or a “phrase” mark added, together with the keyword, in which explanation information the explanation-information judging unit determines the series of words are included.
 27. A recording medium storing a computer readable program for controlling a computer that works to perform an information displaying procedure in an information displaying apparatus provided with a display device, which program comprises: a step of making the computer store keywords and plural pieces of explanation information concerning each keyword; a step of making the computer input search characters; a step of making the computer search for one of the entered series of words through the keywords stored in the storage; a step of making the computer judge whether or not the entered series of words are included any of the plural pieces of explanation information concerning the searched keyword; and a step of making the computer display on the display device the piece of the explanation information which includes the entered series of words, together with the corresponding keyword. 